[iOS] dom解析xml数据，拿到<>里面的值

<response result="success" timestamp="1338890206" cityver="1.0">

<ttscity citycode="CHXX0094" url="http://i.apps.sina.cn/tqt/cit/CHXX0094.cit"/>

</response>

 GDataXMLDocument *gData = [[GDataXMLDocument alloc] initWithData:data options:GDataXMLDocumentKind error:nil];

    // 2. 获得根结点

    GDataXMLElement *root = [gData rootElement];

    // 3. 获得想要的结点

    NSArray *lists = [root nodesForXPath:@"ttscity" error:nil];

    GDataXMLElement *ele = lists.lastObject;

    NSArray *array2 = ele.attributes;

    

    GDataXMLNode *node = array2.firstObject;

    

    

    NSString *cityNode = [node stringValue];